www/qt6-webengine: Fix build on armv7 (hopefully)

I accidentally removed parts of certain patches meant to fix build
on armv7 in [1] which were introduced in [2]. QtWebEngine was building
at the tail end of 6.5.3 on armv7, but I seem to have regressed it with
the update to 6.6.0.

[1] https://cgit.freebsd.org/ports/commit/?id=1d76bdf62dffad91834699701f41d3374dfb6a3a
[2] https://cgit.freebsd.org/ports/commit/?id=dd2c7b778901a7b310d37f044c0018de1603c37f

MFH: 2024Q1